You would first need to lose weight and then get medical clearance and recommendations from your hematologist. These are just a few things that you might need based on the details given.
A BMI above 35 puts patients at risk for any surgery, especially procedures that require anesthesia such as BBL. Additional comorbidities such as Factor V increase the risk. My recommendation would be to lose weight such that your BMI comes down and then go in for a consultation with a Board Certified plastic surgeon.
Based on your photos, I would encourage you to have a discussion with your board certified plastic surgeon on what the ideal weight would be for a safe Brazilian Butt Lift procedure. I prefer to do surgery on patients with a BMI of 30 or below to avoid the increased risk of complications during and after surgery. I advise my patients being at your ideal weight will give the best outcome. In addition, you will need medical clearance based on your health history. Best of Luck